Search

CN-122018113-A - Fixing assembly for installing lens measuring instrument and measuring instrument

CN122018113ACN 122018113 ACN122018113 ACN 122018113ACN-122018113-A

Abstract

The invention relates to the technical field of high-precision optical detection, in particular to a fixing component for installing a lens measuring instrument and the measuring instrument, which comprise a rooting block, a base and a fastening component, wherein the rooting block is connected to the back surface of a lens in an adhesive mode, the base is provided with at least three first contacts opposite to the back surface of the lens and at least two second contacts opposite to the side surface of the lens, and the fastening component is configured to generate a first elastic force along a first direction and a second elastic force along a second direction for the base. The invention utilizes the rooting block to adhere to the back surface of the lens, thereby avoiding finding a mechanical attachment point on the vulnerable optical surface, and simultaneously, the base is elastically connected with the rooting block through the fastening component instead of being rigidly and directly fixed, and the base is respectively elastically abutted to the back surface and the side surface of the lens through the first contact and the second contact, thereby realizing the self-adaptive accurate positioning of the base by taking the mirror surface as a reference.

Inventors

  • LIU GUOQIANG
  • LI WEI
  • LI MINGXIA
  • Cao Longxuan
  • ZHAO GUOFENG
  • DIAO WEIDONG
  • CHEN GUANGZHENG

Assignees

  • 安徽见行科技有限公司

Dates

Publication Date
20260512
Application Date
20260410

Claims (10)

  1. 1. A fixture assembly for mounting a lens measuring instrument, comprising: the rooting block (31) is connected to the back surface of the lens (100) in an adhesive manner; -a base (32) connected to the rooting block (31) by means of a fastening assembly, the base (32) being provided with at least three first contacts (321) opposite the back of the lens (100), and at least two second contacts (322) opposite the side of the lens (100), the fastening assembly being configured such that it is capable of generating a first elastic force in a first direction and a second elastic force in a second direction on the base (32), wherein the first elastic force brings the first contacts (321) against the back of the lens (100), the second elastic force bringing the second contacts (322) against the side of the lens (100); the base (32) and/or the rooting block (31) are/is provided with a mounting part for mounting a measuring instrument and limiting the relative position of the measuring instrument and the lens (100).
  2. 2. The fixing assembly for mounting a lens measuring instrument according to claim 1, wherein the fastening assembly comprises a screw (33), a first nut (34), a first elastic element (35) and a second elastic element (36), wherein the screw (33) is mounted on the rooting block (31), a limiting part for preventing the screw (33) from moving away from the lens (100) is arranged between the screw (33) and the rooting block (31), the first nut (34) is in threaded connection with the screw (33), the first nut (34) is provided with a first pressing surface (341) and a second pressing surface (342) which are distributed in a step shape and face the back of the lens (100), the first elastic element (35) is arranged between the first pressing surface (341) and the rooting block (31), the second elastic element (36) is arranged between the second pressing surface (342) and the base (32), and the second elastic element (36) is used for applying elastic force to the base (32).
  3. 3. The fixation assembly for mounting a lens measuring instrument according to claim 2, wherein the first elastic element (35) comprises an arch (351) and a translating part (352), the arch (351) being located between the first compression surface (341) and the rooting part (31), one end of the arch (351) close to the second contact (322) being in opposite fixed connection with the rooting part (31), one end of the arch (351) remote from the second contact (322) being connected with the translating part (352), the translating part (352) being in sliding connection with the rooting part (31) in the second direction, one end of the translating part (352) remote from the arch (351) being connected with a lateral elastic deformation unit (353), the lateral elastic deformation unit (353) being located opposite a stop wall (324) located on the base (32) in the second direction, the first elastic element (35) being configured to enable the lateral elastic deformation unit (353) to be compressed against the first stop wall (34) when the arch (351) is subjected to a compression by the first elastic deformation unit (353) in the second direction.
  4. 4. The fixing assembly for installing a lens measuring instrument according to claim 2, wherein a waist-shaped hole (311) is formed in one side, far away from the lens (100), of the rooting block (31), a T-shaped head (331) matched with the contour of the waist-shaped hole (311) is arranged at one end, close to the lens (100), of the screw (33), a cavity (312) for the T-shaped head (331) to rotate is formed at one end, close to the lens (100), of the waist-shaped hole (311), a locking groove (313) matched with the contour of the T-shaped head (331) is formed in one cavity wall, far away from the lens (100), of the cavity (312), and a certain included angle is formed between the locking groove (313) and the waist-shaped hole (311), and the locking groove (313) and the T-shaped head (331) form the limiting part.
  5. 5. The fixing assembly for mounting a lens measuring instrument according to claim 4, wherein one end of the T-shaped head (331) opposite to the locking groove (313) is provided with two protruding points (332), and the two protruding points (332) are symmetrically arranged at both sides of the screw (33).
  6. 6. The fixture assembly for mounting a lens measuring instrument according to claim 1, wherein the end of the rooting block (31) in contact with the lens (100) is provided with glue overflow grooves (315), the glue overflow grooves (315) being distributed at least in the circumferential and/or radial direction of the rooting block (31).
  7. 7. The fixture assembly for mounting a lens measuring instrument according to claim 1, wherein the side wall of the rooting block (31) is provided with at least one plane (314).
  8. 8. The fixture assembly for mounting a lens measuring instrument according to claim 2, wherein the base (32) is provided with at least three fourth contacts (323) on a side opposite to the lens (100), each of the first contacts (321) and each of the fourth contacts (323) being aligned one by one in the first direction, respectively, the screw (33) and the fourth contacts (323) constituting the mounting portion.
  9. 9. The fixture assembly for mounting a lens measuring instrument according to claim 1, wherein the rooting block (31) and the base (32) are made of quartz glass.
  10. 10. A measuring instrument, characterized by comprising a sensor element (21) and a measured object (11), the sensor element (21) and the measured object (11) being mounted on the back of two adjacent lenses (100) by means of a fixing assembly (30) according to any one of claims 1 to 9, respectively.

Description

Fixing assembly for installing lens measuring instrument and measuring instrument Technical Field The invention relates to the technical field of high-precision optical detection, in particular to a fixing component for installing a lens measuring instrument and the measuring instrument. Background In the reflection surface system of astronomical telescope, in order to obtain larger luminous flux and higher angular resolution, a reflection array structure formed by splicing a plurality of sub-mirrors is often adopted. The structure requires that each sub-mirror meets certain space position requirements in the assembly and operation process so as to ensure the optical co-phase characteristic of the whole reflecting surface. Therefore, a high-precision displacement sensor needs to be arranged between adjacent sub-mirrors, and the relative position of the sub-mirrors is detected in real time and used as the basis for the correction of a subsequent active optical system. However, the sensor faces two key technical problems in practical application, namely, firstly, a sub-mirror is usually made of high-surface quality materials such as optical glass, the surface is smooth, the contact measurement is high, the traditional sensor is difficult to find stable and reliable mechanical attachment or contact points in the edge area of the mirror surface, damage or pollution to the optical surface is avoided, and secondly, in order to realize the sub-nano optical co-phase precision, the sensor must have extremely high measurement resolution and stability, and extremely severe rigidity requirements are put on the sensor and a fixed structure thereof. If the rigidity of the fixing material is insufficient, environmental micro-vibration, temperature change or gravity release and other factors can cause micro-drift of the reference position of the sensor, so that non-uniform drift of a measurement result is caused, and the accuracy and reliability of the co-phase control are seriously affected. Disclosure of Invention In view of the above-mentioned drawbacks of the prior art, an object of the present invention is to provide a fixing assembly for mounting a lens measuring instrument and a measuring instrument capable of improving the measuring accuracy of the measuring instrument. To achieve the above and other related objects, the present invention provides a fixing assembly for mounting a lens measuring instrument, comprising: the rooting block is connected to the back surface of the lens in an adhesive mode; A base connected with the rooting block through a fastening component, wherein the base is provided with at least three first contacts opposite to the back surface of the lens and at least two second contacts opposite to the side surface of the lens, the fastening component is configured to generate a first elastic force along a first direction and a second elastic force along a second direction on the base, the first elastic force enables the first contacts to be abutted against the back surface of the lens, and the second elastic force enables the second contacts to be abutted against the side surface of the lens; the base and/or the rooting block are/is provided with a mounting part for mounting the measuring instrument and limiting the relative position of the measuring instrument and the lens. In an alternative embodiment of the invention, the fastening assembly comprises a screw, a first nut, a first elastic element and a second elastic element, wherein the screw is installed on the rooting block, a limiting part used for preventing the screw from moving away from the lens is arranged between the screw and the rooting block, the first nut is in threaded connection with the screw, the first nut is provided with a first compression surface and a second compression surface which are distributed in a stepped mode and face the back of the lens, the first elastic element is arranged between the first compression surface and the rooting block, the second elastic element is arranged between the second compression surface and the base, and the second elastic element is used for applying the first elastic force to the base. In an alternative embodiment of the present invention, the first elastic element includes an arch portion and a translating portion, the arch portion is located between the first compression surface and the rooting block, one end of the arch portion, which is close to the second contact, is fixedly connected with the rooting block, one end of the arch portion, which is far away from the second contact, is connected with the translating portion, the translating portion is slidably connected with the rooting block along the second direction, one end of the translating portion, which is far away from the arch portion, is connected with a lateral elastic deformation unit, which is arranged opposite to a blocking wall provided on the base along the second direction, and the first elastic element is configure